In the electroplating industry our anodes are used for:
- Electro galvanising (zinc plating), including steel strip plating
- Precious metal plating (gold, silver, palladium, etc.)
- Hard chromium plating
- Nickel plating
- Tin plating (steel strips)
- Copper plating, copper foil production and copper foil treatment and PCB manufacturing
- Aluminium anodising in liquid-contact-cells
The principle of metal plating is almost identical for all applications. The metal to be plated is dissolved in the electrolyte and the object to be plated is cathodically polarised. With the anodically polarised anodes, the electrical loop is closed. The counter reaction in the plating bath is oxygen evolution at the anode surface.
The advantage of Titanium anodes over non-inert anodes, such as Graphite anodes, is the constant anode – cathode distance (inter-electrode gap) throughout the lifetime of the anodes. Where the inter-electrode gap increases when Graphite anodes slowly dissolve, inert Titanium anodes keep both voltage and product quality constant.
Besides Titanium and Graphite, Lead anodes are also used. Lead dissolving in the electrolyte causes large problems from an environmental point of view, problems that can be avoided by using Titanium anodes.
Oxygen evolving Titanium anodes also have lower anodic operating potentials and hence provide power savings.
An additional advantage of Titanium anodes is the possibility to re-use the Titanium substrate. When the anode coating has reached the end of its lifetime, the anodes can be re-coated after cleaning and, if necessary, repairs.
For each specific application, we have specific coatings for new substrates and for refurbishment, such as:
- Platinised Titanium
- Titanium with an Iridium Mixed Metal Oxide coating
Anodised aluminium is an often-used material in the lithographic industry. Whereas with metal plating a small film of metal is applied on the base material, with aluminium anodising the top layer of the aluminium is oxidised.After anodising (oxidising) the aluminium, its surface provides a better adherence for the light sensitive coating, necessary in the lithographic industry.
The anodes for the metal plating industry are used for electroplating all sorts of objects, from jewellery in small batches to continuous steel strip plating. The diversity of the products that are plated with the help of our anodes is reflected in the diversity of the anodes that we produce. Our own mechanical workshop and carefully selected suppliers, enable us to produce a very wide range of anodes in various shapes.